Is building a specific project in a solution supposed to work? #149

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1. dfederm commented on Jan 6, 2026

   

   David Federman (dfederm)

   on Jan 6, 2026

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   That should work. I suspect that something is wrong with the MSBuild graph build (which I also heavily contribute to), not necessarily the cache plugin.

   Are you able to provide a simple repo for the issue?
2. eriknilsontenstar commented on Jan 7, 2026

   

   eriknilsontenstar

   on Jan 7, 2026

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   Hi dfederm, you are indeed correct that it does work! Until it doesn't... I don't understand these results:

   • In a minimal solution with 3 projects, building each project by itself works
   • In a "real" solution with 11 projects , building one of the library projects works This library project doesn't depend on any of the other projects.
   • In that same "real" solution, building the executable project does not work - gives Cache Hit Ratio NaN

   So, somewhere between the common library project and the executable it fails... Building the whole solution works as expected.

   Is there a way of debugging the graph or something to understand where it might be breaking?

   I'll build each of the 11 projects to see if there is a pattern to which break and which don't.
3. eriknilsontenstar commented on Jan 7, 2026

   

   eriknilsontenstar

   on Jan 7, 2026

   Last edited by eriknilsontenstar

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   Ah, actually scratch that, building any single project in the "real" solution results in either:

   • a cache miss because of "Ignoring successful build for node COMPANYPROJECT_COMPANY.PROJECT.VCXPROJ_B.BIRF3RA1HPUD8CRMPNBA with non-successful dependency: COMPANYOTHERPROJECT_COMPANYOTHERPROJECT.VCXPROJ_B.BIRF3RA1HPUD8CRMPNBA
   • Cache Hit Ratio: NaN

   But building the whole solution does work, we've been running it in our CI now for a while and its made the job way shorter.